/*
 * Copyright (c) 2011-2014 Pivotal Software, Inc.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.camunda.bpm.extension.reactor.projectreactor.selector;

import java.util.Set;

/**
 * Implementation of {@link Selector} that matches
 * objects on set membership.
 *
 * @author Michael Klishin
 */
public class SetMembershipSelector implements Selector {
  private final Set set;

  /**
   * Create a {@link Selector} when the given regex pattern.
   *
   * @param set The {@link Set} that will be used for membership checks.
   */
  public SetMembershipSelector(Set set) {
    this.set = set;
  }

  @Override
  public Object getObject() {
    return this.set;
  }

  @Override
  public boolean matches(Object key) {
    return this.set.contains(key);
  }

  @Override
  public HeaderResolver getHeaderResolver() {
    return null;
  }
}
